I9I7.J 



S. Kemp : Notes on Crustacea Decapoda. 



49 



The third maxillipedes, when extended forwards, reach a little 

 beyond the tips of the third peraeopods and, in the female, much 

 beyond the end of the antennular peduncle. The ultimate segment 

 is not divided into sub-segments. The basal segments of the third 

 maxillipedes and peraeopods are proportionately stouter than in 



i 



a^. 



d. 



Fig. 2. — Outer antennular flagellum of male. 



a. Acetes indicus. c. Acetes insularis. 



b. Acetes ervthraeiis. 



d. Acetes japonicus. 



other species, and the setae with which the limbs are clothed are 

 longer and more numerous. 



The basis of the third peraeopod bears a large tooth on its 

 inner margin close to the insertion of the ischium (text-fig. 3a), a 

 character not found in any of the other three species. 



The third thoracic sternite of the female is very deeply chan- 

 nelled longitudinally, the channel being continued backwards on 



